Bumper clamp



Jan. 14, 1930. H. s. JANDUS ET A1. 1,743,219

BUMPER CLAMP Jan. 14, 1930. H. s. JANDUs l-:TYAL 1,743,219

BUMPER CLAMP Filed July 18', 1927 5 sheets-sheet 2 Jan. 14, 1930. H. s. JANDUS ET A1. a 1,743,219

BUMPER CLAMP Filed July 18, 1927 5 Sheets-Sheet 3 *a f- N .iw-v N Q@ l atroz N111 Patented Jan. 14, 1930 Aram oFFlcE HERBERT S. JANDUS AND EVERETT RUSH KEELOR, OF DETROIT, MICHIGAN, ASSIGNORS,

BY MESNE ASSIGNMENTS, TO GENERAL SPRING BUMPER CORPORATION, A CORPO- BATION OF MICHIGAN Application led w July 18,

This invention relates to clamps for holding several barsin proper spaced relation and more particularly to a clamp adapted to be applied to the several bars of a vehicle bumper.

An object of our invention is to providea clamp which may be readily applied to the bumper bars and which will hold them rigidly in their proper spaced relation. A further object is to provide such a clamp which can be economically constructed but which will have the necessary strength to withstand the shocks to which it may be subjected in service. A further object is to provide such a clamp which will at the same timeV present an attractive appearancev in conjunction with the remainder of the bumper. Further vobjects will be apparent from the description and drawings and from the use of the articles covered by the claims.

In the drawings Fig. 1 represents aplan view of a bumper tothe center of which our clamp has been ap-plied; Fig. 2 shows a fractional front elevation of the central portion of the bumper shown in Fig. 1, showing the clamp in detail; Fig. 3 shows a sectional view taken on line 3-3 of Fig. 2; Fig. 4' shows a rear elevation of the front p'late of the clamp Fig. 5 is a fractional front elevation of the central portion of a bumper similar to that shown in Fig. 1, with a modified type of clamp attached thereto; Fig. 6 shows a sectional view takenon line 6-6 of Fig. 5; Fig. 7 shows a rear elevation of the front plate shown in Fig. 5; Fig. 8 shows.a fractional front elevation of the central portion of a bumper similar to that shown in Fig. 1 with a modification of our clamp attached thereto; Fig. 9 shows a sectional view taken on line 9-9 of Fig. 8; Fig. 10 shows a rear elevation of the front plate shown in Fig. 8.

Of the several reference characters 1 and 2 denote the impact bars of a bumper of the general type shown in the McGregor Patent No. 1,372,154 issued March 22, 1921. This bumper has a rear bar 3 pivotally connected at its ends to the ends of the impact bars by means of pins 4, 4 and has its central portion bent forwardly and connected to the l real BUMPER CLAMP 192:7. Serial No. 206,437.

central portion of the impact bars by means of our clamp.

The front plate 5 may be cast and is provided with a raised rib 6 extending around its periphery and adapted to bear on the front surfaces of the bars 1 and 2. At the top and4 bottom extremities of this plate there are projecting portions 7 and 8 respectively which provide bearing surfaces for the upper edge of the impact bar 1 and the lower edge of the impact bar 2. The oppositely directed U' shaped lugs 9 and 10 project rearwardly from the rear surface of the plate 5 and each is covered by a portion having a slot 11 therein for the reception of the shank, and providing a seatfor the head, of a bolt 12, provided with a a nut 16. The adjacent edges of the lugs 9 and 10 have` depressions 13 and 14 respectively, providing seats for the edges of the bar 3.

The rear clamp plate 15l is adapted to bear on the rear surface of the rear bar 3 and is bent forwardlyl at its end portions to a position adjacent the rear surfaces of the impact bars 1 and 2. This plate is provided with apertures for the reception of the Shanks of bolts 12, 12. i

In the modification shown in Figs. 5, 6 and 7 the front plate 5a has the rearwardly pro-I jecting ribs 6a extending around its periphery andthe portions 7a and 8a extendingrearwardly therefrom to provide bearing surfaces for the edges of the impact bars la and v2a. The rearwardly projecting ribs, covered by the plates 17 17 which have slots 11, 11a therein7 provide recesses for the reception of the Shanks of the bolts 12a, 12a and bearing surfaces for the heads of the said bolts. The rear plate 15a is adapted to bear upon the rear surface of the rear bar 3a and has holes for the reception of shanks of the bolts 12a, 12a. With this front plate, the bars 1a and 2a are adapted to bear upon the rib 6a and upon one of the plates 17, andthe rear bar 3a bears vupon the plates '17, 17 and upon the rib 6a. By tightening the nuts on the bolts 12a, 12a the ends of the rear plate 15a may be drawn into contact with the rear surfaces of bars l@l and 2a. In the modification shown in these gures the front surface of the lower impact bar is inalignment with the front surface of the rear bar 3a at the middle of integral with the upper edge of the rib 6b and having a slot 11b therein provides a bearing for the head of the bolt 12b, the shank of such bolt passing through the said slot.

The curved surface 19 bears upon the upper bars and an auxiliary bar, of a plate havlng edge of the impact bar 1b and so prevents an upward movement thereof. The projection 10b similar to 10 of Fig. 4, provides a recess for the head of the bolt 12b and has a slot 11b for the shank of the said bolt. The impact bars 1b and 2b bear upon the opposite portions of the rib 6b and are prevented from movement away from each other by the projecting portions 18 and 8b. The rear bar 3b is positioned behind and bears upon the rear surface of the impact bar 1". The rear plate 15b is bent at its upper end to provide a bearing surface upon therear surface of the impact bar 1b and at its lower end to provide a bearing surface upon the rear surface of the impact bar 2b; the central portion of this plate being adapted to bear upon the rear bar 31.

In assembling these clamps the. Shanks of the bolts are inserted within the slots provided in the lugs projecting from the rear surface of the front plate so that the heads of the bolts bear upon the bearing therein provided, and the said plate is then applied to the front surface of the impact bars. The rearvplate is applied to the rear surface of the rear bar at such a position that the apertures in the said plate will receive the Shanks of the bolts projecting from the front plates.

' By tightening the nuts on the bolts the several bars are held from relative movement.

The rear plates shown in Figs. 3 and 6 are shown as spaced at their end portions from the rear surfaces of the impact bars. These plates are preferably of relatively soft material which may be bent, by the pressure of the nuts on the'bolts passing therethrough,

to contact with the rear surfaces of the impact bars. It is apparent however that the rear plate may be initially' bent to provide a surface adapted to bear upon the surfaces of these bars and it is not intended to herein limit our invention toa rear clamp plate of any particular shape. In each of the modifications shown the rear surface of the rear from the rear, surface of the impact bars.

show that the invention disclosed hereby can be incorporated into clamps adapted for bars having varying vertical displacement and it vis also apparent that it can be applied to bumpers of types differing from that shown in the drawings. It is not intended to hereby limit its use to any particular type of bumper or to any particular position on the bumper; it being applicable wherever it is desired to clamp several bars` together.

Having thus described our invention, what We claim is l 1. The combination with a pair of spaced portions projecting rearwardly and adapted to bear upon the front surfaces of said spaced bars, and having lugs, with substantially ver-.,

tically extending portions, extending rearwardly therefrom, said lugs being adapted to of the impact bars and rearwardly projecting lugs having substantially vertically extending portions with apertures therein, a rear plate adapted to bear upon the rear surface of a bar and means adapted to fit within the said apertures for drawing said platesto- Ward each other. 2

3. The combination with a pair of spaced bars and a rear bar, of a plate having portions projecting rearwardly and adapted to bear upon the front surfaces of said bars, said plate also having portions adapted to bear upon the edges of the said spaced bars and having rearwardly extending lugs with substantially vertically extending portions having apertures therein, a plate adapted to bear upon the rear surface of the rear bar and means passing through said apertures for drawing said plates toward each other.

4. The combination with a pair of vertically spaced bumper bars and a rear bar, of a plate having projecting portions adapted to bear upon the front surfaces of the said spaced bars and a projecting portion adapted to bear upon the front surface of the rear bar, said last mentioned portion having an aperture therein adapted to receive the head of a bolt, a second plate adapted to bear on the rear surface of the rear bar and a .bolt

for drawing the said plates toward each other.

5. The combination with a pair of vertically spaced bars, of a plate having rearwardly projecting portions adapted to bear on the vfront surfaces of the bars and rearwardly 6. A plate for a bumper clamp, said plateV having rearwardly projecting portions at each side adapted to bear upon bars of a bumper, and a pair of rearwardly projecting portions having apertures therein to reeive means for clamping the plate to the ars.

7. A plate for a bumper clamp, said plate having a projecting portion adapted to bear upon the front surface of a bumper bar, a projecting portion adapted t-o bear upon the edge of the said bar and a projecting portion having an aperture therein for the reception of means for clamping the plate to the bumper.

8. A plate for a bumper clamp, said plate havinga projecting portion extending around its perip ery and adapted to bear upon a bumper bar, and a rojecting portion having an aperture therein for the reception of means for clamping the plateto the bum er.

9. A plate for a bumper clamp, said pate having projecting portions ada ted to ear upon the front surface of a bar o the bumper and an i..shaped pro'ectin portion havmg an aperture therein adapte to receive means for clamping the said plate to a bumper.

10. A plate for a bar clamp, said plate having projectin portions adapted to bear upon the surface o a bar and a projecting portion adapted to bear upon the surface of a second bar and providing a seat for means for clamping the plate to the bars.

11. A plate for a bumper clamp, said plate having projecting portions on each side, each adapted to bear upon the surface of a'bar of the bumper and a projectin portion having an aperture therein and a apted to prolvide a seat for means for clamping the said plate to the bumper.

12. A plate for a bumper clamp, said plate having a projecting portion adapted to bear upon a bar of the bumper and a projectin portion having an aperture therein adapte to rovide a seat for means for clamping the sai plate to the bumper.

13. The combination with a pair of spaced bars, of a plate adapted to bear upon the front' surfaces of said bars, said plate having a rearwardl projecting apertured lug sha ed to provi e a seat at the rear of the late or the head of clamping means, a rear p ate ada ted to bear upon the rear surfaces'of said ars and clamp means passing through the aperture in said lug and between said barsto draw said plates toward each other.

14. rThe combination with a pair of spaced bars, of a plate adapted to bear upon the' front surfaces of said bars, said plate having a rearwardly projecting apertured lug shaped to provide a seat at the rear of the plate for the head of clamping means, and a rearwardly projecting surface adapted to bear upon an edge of one of said bars, a rear plate adapted to bear upon the rear surface of of one of said bars, and clamping means passing through the aperture in said lug and between said spaced bars to draw said plates toward each other.

15. A clamp plate having a surface adapted to bear upon the surface of a bar to be clamped, said plate having a rearwardly eX- tending arched lug with an aperture in its middle portion. Y

16. A clamp plate having a surface adapted to bear 'upon the surface of a bar to be clamped thereby, said plate having a rearwardly eX- tending arched lug, closed at one end and having an aperture in its middle portion.

17. The combination with a pair of bumper bars adapted to be clamped together, of a clamp plate having a surface bearing upon the front surface of one of said bars, said plate having an arched portion projecting from its rear surface with an aperture in said arched portion, a rear plate adapted to bear upon the rear surface of one of said bars, and clam ing means for drawing said plates towar eachother.

18. The combination with a pair of vertically s aced impact bars and an auxiliary bar to e clamped thereto, of a clampA plate ada ted to bear upon the front surfaces of sai s aced bars, said clamp plate having an arche lug projecting from its rear surface with an aperturein the middle portion of said lug, a rear plate adapted to bear upon the rear surface of said auxiliary bai", and means passing between said impact bars for drawing said plates together. s

19. lThe combination with a pair of vertically s aced impact bars and an auxiliary bar to e clamped thereto, of a clamp plate adapted to bear upon the front surfaces of said spaced bars, said clamp plate having a rearwardly projecting portion adapted to bear u on an edge of said impact bars and an arche lug, having an apertureinits middle portion, projecting from the rear surface of said plate, a rear plate adapted to bear upon the rear surface of one of said bars and means, passing between said impact bars, for drawing said plates toward each other.

20. The combination with a pair of vertically spaced impact bars and an auxiliary bar adapted to bevconnected thereto, ofV a plate adapted to bear upon the front surfaces of said impat bars, said plate having rearwardjab ly projecting lugs adaptedto bear upon the outer ed es of said impact bars and having rearwar ly projecting arched lugs with apertures in their middle portions, a rear plate adapted to bear upon the rear surface of said auxiliary bar and means, passing between said\bars and through said apertures, for

drawing said front and rear plates toward each other.

21. A clamp plate for securing bars against movement relative to each other, said plate having portions adapted to bear upon the front surfaces of the bars, projecting portions adapted to bear upon the edges of the said bars, and projecting lugs having portions eX- tending substantially parallel to the said bars, said last mentioned portions having apertures for the reception of suitable clamping means for drawing said plate toward the front surfaces of said bars.

, 22. A clam plate for securing bars against movement re ative to each other, said plate having rearwardly projecting portions Iadapted to provide bearing surfaces for the front surfaces of. said bars, and having apertured portions connecting said projecting portions and adaptedto provide seats spaced rearwardly from the plate for the reception of suitable clamping means. l

23. A clamp plate for securing vertically spaced bars of a vehicle bumper, said plate having marginal flanges adapted to bear/upon the front surfaces of said spaced bars, said marginal ianges having inwardly projecting portions opposite the space between said bars and adapted to provide a seat between said projections and the rear surface of said platefor the reception of suitable clamping means.

In testimony whereof, we hereuntov affix our signatures.

' HERBERT S. JANDUS. i

EVERETT RUSH KEELOR. 

